DSpace Community:http://hdl.handle.net/10204/3215
Wed, 04 Mar 2015 00:12:52 GMT2015-03-04T00:12:52ZHuman perception of the measurement of a network attack taxonomy in near real-timehttp://hdl.handle.net/10204/7878
Title: Human perception of the measurement of a network attack taxonomy in near real-time
Authors: van Heerden, R; Malan, MM; Mouton, F; Irwin, B
Abstract: This paper investigates how the measurement of a network attack
taxonomy can be related to human perception. Network attacks do not have a
time limitation, but the earlier its detected, the more damage can be prevented
and the more preventative actions can be taken. This paper evaluate how elements
of network attacks can be measured in near real-time(60 seconds). The
taxonomy we use was developed by van Heerden et al (2012) with over 100
classes. These classes present the attack and defenders point of view. The degree
to which each class can be quantified or measured is determined by investigating
the accuracy of various assessment methods. We classify each class as
either defined, high, low or not quantifiable. For example, it may not be possible
to determine the instigator of an attack (Aggressor), but only that the attack
has been launched by a Hacker (Actor). Some classes can only be quantified
with a low confidence or not at all in a sort (near real-time) time. The IP address
of an attack can easily be faked thus reducing the confidence in the information
obtained from it, and thus determining the origin of an attack with a low confidence.
This determination itself is subjective. All the evaluations of the classes
in this paper is subjective, but due to the very basic grouping (High, Low or Not
Quantifiable) a subjective value can be used. The complexity of the taxonomy
can be significantly reduced if classes with only a high perceptive accuracy is
used.
Description: Proceedings of the 11th IFIP TC 9 International Conference on Human Choice and Computers, HCC11 2014, Turku, Finland, 30 July –1 August 2014Tue, 01 Jul 2014 00:00:00 GMThttp://hdl.handle.net/10204/78782014-07-01T00:00:00ZGeneration of super-resolution stills from videohttp://hdl.handle.net/10204/7877
Title: Generation of super-resolution stills from video
Authors: Duvenhage, B
Abstract: The real-time super-resolution technique discussed in this paper increases the effective pixel density of an image sensor by combining consecutive image frames from a video. In surveillance, the higher pixel density lowers the Nyquist rate of the sensor which improves the detection, recognition and identification (DRI) task performance of the system. When a sensor lingers on a stationary target or tracks a moving target then the image of the target would with time move around slightly on the focal plane. If one accurately registers the image of the target on the focal plane to some reference then one can increase the effective sensor pixel density by stacking or appropriately combining the registered images. The super-resolution technique operates on the focal plane array after the image has been degraded by the Modulation Transfer Function (MTF) of the lens and atmosphere. Any high frequencies lost due to the atmosphere or lens cannot be recovered. However, if the MTFs of the lens and atmosphere are good enough to cause aliasing on the focal plane then the sharp stack algorithm discussed here can at least double the resolving power of the sensor.
Description: 2014 PRASA, RobMech and AfLaT International Joint Symposium, Cape Town, 27-28 November 2014Sat, 01 Nov 2014 00:00:00 GMThttp://hdl.handle.net/10204/78772014-11-01T00:00:00ZTowards cyber safety education in primary schools in Africahttp://hdl.handle.net/10204/7875
Title: Towards cyber safety education in primary schools in Africa
Authors: Von Solms, S; Von Solms, R
Abstract: Cyber safety has become critically important to all who are active in cyber space. In most African countries no coordinated activities in this regard are taking place, even though many children are already active on cyber space. This paper presents an introductory, but usable, guide to empower primary school teachers, specifically in Africa, to impart the basic principles of cyber safety to their learners. A set of very usable, self-explanatory, publicly available online video cartoons were identified for use as resources by teachers in discussing and stimulate cyber safety principles to primary school learners.
Description: Proceedings of the Eighth International Symposium on Human Aspects of Information Security & Assurance (HAISA 2014), Plymouth, UK, 8-10 July 2014Tue, 01 Jul 2014 00:00:00 GMThttp://hdl.handle.net/10204/78752014-07-01T00:00:00ZHigh-performance low-power smart antenna for smart world applicationshttp://hdl.handle.net/10204/7868
Title: High-performance low-power smart antenna for smart world applications
Authors: Lysko, AA; Mofolo, M
Abstract: This paper overviews a low-power beam-switched smart antenna. The antenna operates at 2.4 GHz frequency band, has low power consumption (1.5 mW), and is intended for smart world applications in communications and metering. The antenna has demonstrated 4x improvement in throughput and 2x reduction in latency, as compared to an equivalent gain omnidirectional antenna. The tests were done in a mesh network environment. In addition, the modifications made to the wireless driver permitted the antenna system to perform an automatic failover and link recovery.
Description: 6th International Congress on Ultra Modern Telecommunications and Control Systems (ICUMT 2014), St. Petersburg, Russia, 6-8 October 2014Wed, 01 Oct 2014 00:00:00 GMThttp://hdl.handle.net/10204/78682014-10-01T00:00:00Z